Real-Time Strategy · Real Biology

Biology Games

Fun is the Emotional Response to Learning

Command white blood cells. Crush bacteria, viruses & cancer.

Free download · PC · Mac · Linux · Pay what you want
Scroll
10+
Real Pathogens
20+
White Blood Cell Types
Ages 10+
For Big Kids & Grown-Ups
Free
Download & Play Today
Immune Defense · Flagship RTS

Command an army
inside the body.

A real-time strategy game where every unit is a real cell and every ability is a real protein. If you can play StarCraft, you can run an immune system.

Download Free →

Bacterial Invasion

Marshal neutrophils and macrophages. Deploy phagocytosis before the infection cascades.

Viral Outbreak

Signal T-cells with the right MHC-I match. One mistake and the host cell is lost.

Cancer & Autoimmune

Balance aggression against tolerance. Kill the tumor without turning on the body.

01
Scout

Spot the pathogen. Is it bacteria, virus, or something worse?

02
Deploy

Send the right white blood cell with the right surface proteins.

03
Adapt

Signal, mutate response, don't trigger autoimmunity.

04
Win

Clear the threat. Learn the biology without noticing.

Fun · Learning · Same Thing

You won't feel
like you're studying.

You'll feel like you're winning battles. But every unit you command is a real cell, every ability a real protein, every enemy a real pathogen. The biology sneaks in through the fun.

College kids, curious adults, teachers, gamers — Immune Defense is built for anyone who ever thought "cells are cool" and wanted to try running one.

Try it Free →
The Briefing

Get early access
before your immune system does.

Playtest invites, new levels, behind-the-scenes molecular design, and first-in-line on Immune Defense 2023. No spam. Unsubscribe anytime.

✓ Playtest access✓ New game drops✓ Zero spam